/*
 * Copyright (C) 2005-2015 Christoph Rupp (chris@crupp.de).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package de.crupp.hamsterdb;

public class DatabaseException extends java.lang.Exception {

  private native String ham_strerror(int errno);

  /**
   * Constructor
   */
  public DatabaseException() {
    super();
  }

  public DatabaseException(Throwable t) {
    super(t);
  }

  public DatabaseException(int errno) {
    super();
    m_errno = errno;
  }

  /**
   * Returns the hamsterdb error code
   *
   * @return The hamsterdb error code
   */
  public int getErrno() {
    return m_errno;
  }

  /**
   * Returns an English error description.
   * <p>
   * This method wraps the native ham_strerror function.
   *
   * @return an English error description
   */
  public String getMessage() {
    return ham_strerror(m_errno);
  }

  /**
   * Returns an English error description.
   * <p>
   * This method wraps the native ham_strerror function.
   *
   * @return an English error description
   */
  public String toString() {
    return getMessage();
  }

  /**
   * The hamsterdb status code
   */
  private int m_errno;

  static {
    System.loadLibrary("hamsterdb-java");
  }
}
